Got HTTP status 404 Not Found for "http://roaringjelly.org/~jc/music/book/1812/WilliamCampbell_10thBook_1798-V1.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-1478-WilliamCampbell_10thBook_1798-V1.ps) >>/Users/jc/w/tmp/Tune-1478-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/1812/WilliamCampbell_10thBook_1798-V1.abc

Error exit status 256; here are some files to check:
[P=tuneget V=1/1 B=0 scale=0.70 512x512 PNG]
filesizedescription
Coll_14788.log 136863 Log file, useful mostly for debugging
Form_14782.log 943 Log file, useful mostly for debugging
Tune-1478-WilliamCampbell_10thBook_1798-V1.abc 169 ABC music file with the extracted tune(s)
Tune-1478-WilliamCampbell_10thBook_1798-V1.ps 6 PostScript
Tune-1478-WilliamCampbell_10thBook_1798-V1.txt 169 Plain-text file with the extracted tune(s)
Tune-1478-get.log 4528 Log file, useful mostly for debugging
Tune-14782-get.log 3208 Log file, useful mostly for debugging
These files should be available for 24 hours.